I've been grappling with this for a number of days now; dnf-0.4.19-1.noarch is installed, but I don't recall when this started. Is this an issue on "all" systems or is it specific to some dependency/misconfiguration on "some" systems? Mainly, should we expect an official release-version to fix this some time in the near future or will we have to pull the git repository? From the looks of it, `isinstance` expects tid AND pats, as opposed to OR; I suppose it may be coding error (i.e. system-wide).

Package dnf-0.4.20-1.fc20:
* should fix your issue,
* was pushed to the Fedora 20 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing dnf-0.4.20-1.fc20'
as soon as you are able to.
Please go to the following url:
https://admin.fedoraproject.org/updates/FEDORA-2014-4882/dnf-0.4.20-1.fc20
then log in and leave karma (feedback).

dnf-plugins-core-0.0.8-2.fc20, libsolv-0.6.1-1.git6d968f1.fc20, hawkey-0.4.16-1.fc20, dnf-0.5.2-1.fc20 has been pushed to the Fedora 20 stable repository. If problems still persist, please make note of it in this bug report.

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